JPS61131272A - Carriage driving mechanism of disk type memory device - Google Patents

Abstract

PURPOSE:To guide correctly a carriage main body in the diametrical direction of a disk by including a guide rail parallel to the diametrical direction of the disk, and a ball bearing pivoted at the carriage main body and abutted on the circumference surface with a U-shaped groove, and rotating the bearing along a guide rail. CONSTITUTION:A ball bearing 14 is pivoted through a supporting shaft 14a to a carriage main body 4, and the circumference surface with the U-shaped groove abuts on a guide rail part 12 of a guide member 11. A ball bearing 15 is pivoted through a supporting shaft 15a to an elastic member 16 such as a plate spring fixed to the carriage main body 4. Since the guide member 11 is molded by drawing processing, two guide rail parts 12 and 13 are high in accuracy of parallelism, ball bearings 14 and 15 are rotated along the guide rail parts 12 and 13 of the member 11, then, the carriage main body 4 is not subject to oscillation and shifted smoothly, and the bearing 15 is pressured to the guide rail part 13 in accordance with a tension of the elastic member 16. Thus, the assembling and adjusting can be executed easily with high accuracy.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a linear access type -1- of a disk allocation 1,0 device used as an external storage device of an electronic AT computer or the like.
This relates to the spear drive mechanism.

-iU, -14i This type of conventional -1-spear drill drive machine +14 is shown, for example, in Figures 4 and 5.
A tit head 3 is attached to the tip of a main body frame 1 of the apparatus, a pair of guide shafts 2, which are arranged in parallel along the radial direction of a magnetic disk (not shown) in a recess 1a of the main body frame 1. a carriage body 4, and support shafts 5a, 5a, 5a that are perpendicular to a plane that includes the axes of the left and right guide shafts 2, 2, which are attached to the lower surface of the carriage body 4 in alternating positions at different left and right sides. Three ball bearings 5 are fitted into the left and right guide shafts 2, 2, and have a tJ-shaped grooved peripheral surface in contact with either of the guide shafts 2.2.
5° 5 and the vertical portion of the main body frame 1] b, the stepping motor 6 fixed to the rotating shaft 6a of the stepping motor 6, and the capstan 7 fitted to the rotating shaft 6a of the stepping motor 6;
The central part of H is fixed to capno and tongue 7, and both ends are;
The tension is applied by a spring (not shown) fixed to the (
-1”j steel handle [from 8th grade to basic 6..4
^1 is formed, and the stepping motor 6 causes -1=
Rotate the handle 7 to move the carriage body 4 along the guide shaft 2.2 by changing the position of both ends of the steel handle 1 in the same direction. It was like that.

7. Even though the pole ring 5 is originally made with very high precision, there are some radial gaps between the inner ring and the pole and between the outer ring and the ball. In a mechanism that requires precision such as this, this slight gap appears as a scratch on the magnetic hem 1-3 with respect to the magnetic disk record 1a1~rack, and the magnetic disk record 1
There was a problem that the 0 device could not withstand the use as the 10 device, but this was caused by the spring 9 interposed between the inner surface of the main body frame 1 and one of the guide shafts 2. Each ball bearing 5,5.
By applying pressurization to 5, it was possible to completely solve the problem.

However, according to this configuration, the guide shaft 2 is a round bar, which is usually formed by rotary processing, so even if it is polished after forming, circumferential holes remain on the circumferential surface. When the hair ring 5 rolls along the guide shaft 2, the carriage body 4 does not move smoothly and is subject to vibration, and it is very difficult to install the two guide shafts 2.2 in parallel with good stacking. Furthermore, the main body frame 1.
Since various parts have to be assembled into the bottom of the four parts 1a of 1, the assembly and adjustment is troublesome and difficult to perform accurately due to the large number of parts, and all assembly is done in a clean room. The drawback was that the cost was high because it sometimes had to be completed.

Purpose: In view of the above points, the present invention provides a carriage drive mechanism for a disk storage device that can be easily mounted with high precision, easily assembled and adjusted, and manufactured at a low cost with a simple configuration. is intended to provide.

General -□1" This purpose is to provide a pair of guide rails arranged in parallel along the radial direction of the disk, and a pair of guide rails that are pivotally attached to the carriage body and alternately attach the and a plurality of ball bearings whose peripheral surfaces with grooves are brought into contact with each other, and the ball bearings roll along the guide rail to guide the carriage body in the radial direction of the disk. A carriage for a disk type storage device, further characterized in that the pair of guide rails are formed by a guide member formed by a drawing machine and having guide rail portions on opposite side edges. The problem is solved by a drive mechanism.

In addition, the purpose of the above is to provide a pair of guide rails arranged in parallel along the radial direction of the disk, a pair of guide rails that are pivotally connected to the carriage body, and alternately attach one of the guide rails to one of the guide rails. The carriage includes 7 rings to 7M balls whose circumferential surfaces are in contact with each other, and guides the carriage body in the radial direction of the disk each time the ball bearing rolls along the guide rail. , and is characterized in that a ball bearing roughly in contact with one of the guide rails is pivoted to an elastic member such as a temporary spring fixed to the four-split body C1r,
This problem is solved by a carriage drive mechanism of a disk storage device.

Furthermore, the purpose of the description is to provide a pair of guide rails that are arranged in parallel along the radial direction of the disk, and a pair of guide rails that are pivotally connected to the carriage main body so that one of the guide rails is connected to the other. The U-shaped groove (=I) includes a plurality of ball bearings whose peripheral surfaces are brought into contact with each other, and when the ball bearings roll along the guide rail, the The entire mechanism is attached to the bottom plate H, which is separated from the main body frame of the disk storage device!1.n.
This problem is solved by a carriage drive mechanism for a disk-type storage device, which is characterized by an eclipse.

Actual b't (+lI Figures 4 and 5 based on the embodiment shown in the drawings below)
The present invention will be explained by assigning the same reference numerals to the same members as in the conventional example shown in FIGS. 1 and 2.
081.1 The main body defining the bottom of the four parts 1a of the main body frame 1.1 of the magnetic disk storage device] 1/-J, a bottom plate formed separately from 1, 11 is attached to the bottom plate 10] Guide rails 12.
Reference numeral 13 denotes a guide member formed by a drawing machine extending parallel to the radial direction of a disk (not shown); 14 is a guide member pivotally attached to the carriage body 4 via a support shaft +4a; The guide rail portion 12 of 11 has a J-shaped 7h circumferential surface abutted against a plurality of (two in the illustrated case) balls 7 ring, and 15 is a leaf spring fixed to the carriage body 4. At least one piece (in the case of illustration - pieces) which is pivotally attached to an elastic member 16 such as 16 via a support shaft 15a, and whose 1J-shaped grooved peripheral surface is brought into contact with the guide rail portion 13 of the guide member 11. Paul Hairing.

The embodiment of the present invention is constructed as described above, and its operation is similar to that of the conventional example shown in FIGS. 4 and 5. Furthermore, since the guide member is formed by drawing, two guide rail parts 12.13 has very high accuracy of parallelism, and since the extraction opening extends in the longitudinal direction, that is, in the direction of movement of the carriage body 4, the ball bearings 14.15 are attached to the guide rail portion 12 of the guide member 11. .13, the carriage body 4 moves smoothly without receiving vibrations,
Further, since the ball bearing 15 is pivotally connected to an elastic member 116 such as a leaf spring fixed to the carriage body 4, the ball bearing 15 is pressed against the guide rail portion 13 according to the tension of the elastic member 16. Furthermore, since the entire carry and jig drive mechanism is assembled on the bottom +H10, which is separate from the main body frame 1, assembly and adjustment can be performed easily and with high precision, and the main body frame can be easily machined. Also, assembly work can be performed outside the clean room, significantly reducing costs.

TakanJI (7) 'Air' 1 As described above, according to the present invention, a pair of guide rails arranged in parallel along the radial direction of the disk, and a pair of guide rails which are pivotally attached to the carriage body and are arranged alternately a plurality of hole hair rings whose U-shaped grooved peripheral surfaces are brought into contact with either one of the guide rails, and when the seven rings roll along the guide rails to the ball, the carriage is moved. The main body is guided in the radial direction of the disk, and the pair of guide rails are formed by a guide member formed by drawing process and have guide rail portions on opposite side edges, or are brought into contact with one of the guide rails. Since the ball bearing is pivotally connected to the elastic part 4A, such as a temporary spring, which is pivotally connected to the carriage main body, or the entire mechanism is installed on the bottom surface separated from the main body frame of the disk storage device, the guide rail can be mounted in parallel with high precision, and when the ball bearing rolls along the guide rail, the carriage body can move smoothly without vibration, and assembly and adjustment can be easily performed with high precision. Furthermore, by pivotally mounting the ball bearing to the carriage body via an elastic member such as a temporary spring, there is no need for a separate elastic element, which simplifies the structure, and the entire mechanism is mounted on a bottom plate separate from the main body frame. This allows each assembly to be inspected and checked for suitability, and the carriage drive mechanism itself can be assembled outside the clean room, significantly reducing costs. It is extremely effective.

[Brief explanation of drawings]

FIG. 1 is a plan view of a disk storage device including an embodiment of the carriage drive mechanism according to the present invention, and FIG.
3 is a perspective view of a guide member, FIG. 4 is a plan view of an example of a disk storage device including a conventional carriage drive mechanism, and FIG. 5 is a sectional view taken along line n--n in FIG. 1. be. ■...Body frame, 2...Guide shaft, 3...
・Magnetic head, 4... Carriage body, 5...
Ball bearing, 6 ... Stepping motor, 7
... Capstan, 8 ... Steel hand, 9
...Spring, 10. ,,,Bottom plate, 11...
Guide member, 12.13...Guide rail part, 14.1
5...Ball bearing, 16...Elastic member.

Claims (3)

[Claims] (1) A pair of guide rails are arranged in parallel along the radial direction of the disk, and the U-shaped grooved circumferential surface of the guide rails is pivotally connected to the carriage body and alternately contacts one of the guide rails. and a plurality of ball bearings, the ball bearings rolling along the guide rails to guide the carriage body in the radial direction of the disk, and further including a plurality of ball bearings arranged along the guide rails. A carriage drive mechanism for a disk storage device, characterized in that the carriage drive mechanism is constituted by a guide member formed by drawing and having guide rail portions on opposite side edges. (2) A pair of guide rails arranged in parallel along the radial direction of the disk, and a U-shaped grooved circumferential surface that is pivotally connected to the carriage body and alternately abuts one of the guide rails. The carriage body is configured to be guided in the radial direction of the disk by rolling along the guide rail, and further includes a plurality of ball bearings mounted on one of the guide rails. A carriage drive mechanism for a disk storage device, characterized in that a ball bearing brought into contact with the carriage is pivotally connected to an elastic member such as a leaf spring fixed to a carriage body. (3) A pair of guide rails arranged in parallel along the radial direction of the disk and a U-shaped grooved circumferential surface that is pivotally connected to the carriage body and alternately contacts one of the guide rails. The carriage body is guided in the radial direction of the disk by rolling along the guide rail, and the entire mechanism is of the disk type. A carriage drive mechanism for a disk storage device, characterized in that it is assembled on a bottom plate separated from a main body frame of the storage device.